Two-stroke-cycle internal-combustion engine.



P. HUNTINGTON.

Two-STROKE CYCLE INTERNAL ooMBUsTloN ENGINE.

APPLICATION FILED FEB.24, 1912. 1,065,250. Patented June 17,1913.

2 SHEETS-SHEET l.

fw Anmwnv AH coLumm PLANOGRAPH c0.,wAsmNG'r0N. uA c.

P. HUNTINGTON.

TWO-STROKE GYGLE INTERNAL GOMBUSTION ENGINE.

APPLICATION FILED PENN, 1912.

1,065,250, Patented June 17, 1913.

2 sHEETs`sHEET z.

cccccc nl A PLANOURAPH Co.,W^sHlNu1'oN. D. c.

BERCY HUNTINGTON, or LIVERPOOL, NGLAND'.

TWO-STROKE-CYCLE INTERNAL-COMBUSTION ENGINE.

Speccaton of Letters Patent.

Patented J une 17, 1913.

Application flied February 24, 1912. serial No. 679,752'.

To all whom it may concern:

Be it known that I, Pliner HUNTINGTON, a subject of the King of England,residing at 13 Cumberland street, Liverpool, in the county of Lancaster,England, have invented certain newI and useful Improvements in orRelating to Two Stroke Cycle Internal- Combustion Engines, of which thefollowing is a specification.

It has, heretofore, been proposed to construct two-stroke cycleinternal-combustion engines in which communication between a mixturecompressing cylinder and the working cylinder-in order to admitIexplosive mixture to the working cylinder-is established by means of apassage formed in the piston rod, during the travel of said rod, theburnt gases being discharged through ports in the working cylinder whichare uncovered by the piston in its working stroke.

My invention relates to this type or kind of engine and has for its mainobject to insure the scavenging of the working cylinder.

1 will describe my invention with the aid of the accompanying sheets ofexplanatory drawings, in which Figure 1 is a longitudinal section, andFig. 2 a plan view of an engine provided with my improvements, andcapable of double acting and reversing. Fig. 3 is' a sectional plan viewof a portion of the working cylinder and Fig. 4 is a side elevation ofthe piston rod, drawn to an enlarged scale, as compared with Figs. 1 and2.

Referring to Figs. 1 to 4 of the drawings, 1 indicates the workingcylinder, 2 the piston (which in practice may be water cooled) and 3 thepiston rod. At each end of said cylinder 1, there are formed in thepiston rod 3 a slot 4 and a slot 5 diametrically opposite each other;said slots 4 and 5 are respectively adapted to communicate or registerwith ports 6 and 7 provided in an extension Sa of the cylinder cover 8;said port 6 communicates by means of branches 9, main 10, and branches11, with a double acting air compressor 12, t-he plunger or piston 13whereof is mounted upon an extension of said piston rod 3; and ports 7communicate by means of branches 14, main 15, and branches 16 with adouble acting fuel compressor 17, the plunger or piston 18 whereof ismounted upon an extension of the piston rod 3. A row of exhaust ports 19are provided in the middle of the cylinder 1. In action, the piston 2 ofthe working cylinder 1, in its outward stroke from one end of thecylinder uncovers said row of ports 19, and, in continuing its travel anair slot 4 in piston rod 3 establishes communication between a port 6(Fi-g. 3) and the interior of the cylinder,- when air from compressor 12enters the cylinder (by way o'f a branch 11, main 10, and a branch 9)scavenges it, and passes out through said exhaust ports 19; in thecontinued travel of the piston communication is established by a fuelslot 5 between a port 7 and the interior of said cylinder, and fuel, ora rich mixture of air and fuel (hereinafter referred to as fuel) enterscylinder from compressor 17 by way of a branch 16, main 15, and a branch14. The piston rod in the return, strokeof the piston first closes thecommunication between said compressors and the cylinder (through themovement of said slots out of register with their respect-ive ports) andthe piston then closes the exhaust ports 19 and compresses the charge ofair and fuel, which is fired in well known manner on the next andworking stroke of the piston. In order to enhance the diffusion of airand fuel within cylinder 1, there may be provided in the piston rod 3small passages 21, 22, passages 21 communicating with slot 4 andpassages 22 communicating with slot 5, which passages open into thecylinder a little in advance ofthe respective slots. Obviously, if it bedesired that the engine shall be single acting, the slots, ports andpassages before described are arranged in connection with one end onlyof said cylinder 1, and a trunk piston having a piston rod at one endand a connecting rod at the other may be employed.

It will be obvious that the spark timing apparatus for exploding thecharges may be so arranged that the engine is capable of reversing; andmy invention may be applied to engines of the Diesel type.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is Y 1. A two stroke cycle internal combustionengine, comprising a working cylinder; air and fuel inlet ports; apiston rod and piston; slots in the piston rod so arranged that air andfuel are admitted separately to said cylinder through the piston rod,the air being admitted in advance of the fuel; and discharge ports insaid cylinder adapted to be uncovered by t-he piston.

two stroke cycle internal combustion engine; cinnprising a Workingcylinder; air and fuel inlet ports; a piston rod and piston; slots inthe piston rod so arranged that air and fuel are admitted separately tosaid cylinder at each end thereof through the piston rod; the air beingadmitted in advance of the fuel; and discharge ports in the middle ofsaid cylinder adapted to be uncovered by the piston toward the end ofeach stroke.

tivo stroke cycle internal combustion engine, comprising a workingcylinder; air and fuel inlet ports; a piston rod and piston; slots inthe piston rod so arranged that air and fuel are admitted separately tosaid cylinder througli the piston rod7 the air being admitted in advanceof the fuel; discharge ports in said cylinder adapted to be uncovered bythe piston; air and fuel comysors operated through the reciprocation 'ithe piston rod; and means whereby said compressed air and fuel areconveyed from said compressors to said Working cylinder.

t. il tivo stroke cycle internal combustion engine7 comprising a Workingcylinder; air and fuel inlet ports; a piston rod and piston; slots inthe piston rod so arranged that air and fuel are admitted separately tosaid cylinder at each end thereof; through the piston rod, the air beingadmitted in advance of the fuel; discharge ports in the middle of saidcylinder adapted to be uncovered by the piston toiva'rd the end of eachstroke; air and fuel compressors operated through the reciproeation ofthe piston rod and means whereby said compressed air and fuel areconveyed from said con'ipressors to said Working cylinder.

fr tivo stroke cycle internal combustion engine, comprising a Workingcylinder; air and fuel inlet ports; a piston rod and piston; slots inthe piston red so arranged that air and fuel are admitted separately tosaid cylinder through the piston rod, the air being admitted in advanceof the fuel; a passa through said piston red which communicates with theair slot therein and a passage through said piston rod whichcommunicates with the gas slot therein; and discharge ports in saidcylinder adapted to be uncovered by the piston.

t3. il tvvo stroke cycle internal combustion engine. comprising aWorking cylinder; air

and fuel inlet ports; a piston rod and piston; slots in the piston rodso arranged that air and fuel are admitted separately to said cylinderat each end thereof through the piston rod, the air being admitted in arvanee of the fuel; a passage through said piston rod which connnunicateswith the air slot therein and a passage through said piston rod whichcommunicates ivith the gas slot therein; and discharge ports in themiddle of said cylinder adapted to be uncovered by the piston toward theend of each stroke.

7. A two stroke cycle internal combustion engine; comprising a workingcylinder; air and fuel inlet. ports; a piston rod and piston; slots inthe piston rod so arranged that air and fuel are admitted separately tosaid -cylinder through the piston rod, the air being admitted in advanceof the fuel; a passage through said piston rod which coinmunicates Withthe air slot therei and a passage through said piston rod `whichcommunicates ivith the gas slot therein; discharge ports in saidcylinder adapted to be uncovered by the piston; air and fuel compressorsoperated through the reciprocatii'm of the piston rod; and means wherebysaid compressed air and fuel are conveyed from said compressors to saidWorking Cylinder.

8. A tivo stroke cycle internal combustion engine; comprising a workingcylinder; air and fuel inl-et ports; a piston rod and piston; slots inthe piston rod so arranged that air and fuel are admitted separately tosaid cylinder at each end thereof through the piston rod, the air beingadmitted in advance of the fuel; a passage through said piston rod whichcommunicates With the air slot therein, and a passage through saidpiston rod; which communicates with the gas slot therein; dischargeports in the middle of said cylinder adapted to be uncovered by thepiston toward the end of each stroke; air and fuel compressors operatedthrough the reciprocation of the piston rod; and means whereby saidcompressed air and fuel are conveyed from said compressors to saidWorking cylinder.

in testimony whereof l affix my signature in presence of two Witnesses.

PERCY HUNTNGTON.

Witnesses doi-IN HINDLEY WALKER, sonnL F. WALKER.

Copies of this patent may be obtained for five cents cach, byaddressing' the Commissioner ot' Patents,

Washington, D. C.

